User manual

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Working principle

Each segment of the digital tube is make up of the light emitting diode, and so when used with

the light emitting diode, it should connect with the current-limiting resistor as well, if not the

excessive current may burn light emitting diode.

The digital tube used in this experiment is a common anode common anode, The public pole

COM received +5 V when the common anode Digital tube be applied. The corresponding fields

are alight when a field emitting cathode of the diode is low, which are not bright when a field of

the cathode is high.

Connection

One end of the current limiting resistor plugged into the digital I / O pin is connected to the other

end of the not digitally tube field, the six remaining field and a decimal point followed by the

return Ways to access. If public COM is common anode received a +5 V, else received a GND.

There are a total 12 pin in one 4-bit digital tube.The decimal point downward when being placed

in front of, lower left corner has 1-bit. The other pins’ sequences are rotated counterclockwise.

Upper left corner is the largest 12th pin.